includes: remove curl/curlbuild.h and curl/curlrules.h

Rely entirely on curl/system.h now.

Introduced in Aug 2008 with commit 14240e9e10. Now gone.

Fixes #1456

src/CMakeLists.txt

@@ -56,7 +56,7 @@ source_group("curl header files" FILES ${CURL_HFILES})
 include_directories(
   ${CURL_SOURCE_DIR}/lib        # To be able to reach "curl_setup_once.h"
   ${CURL_BINARY_DIR}/lib        # To be able to reach "curl_config.h"
-  ${CURL_BINARY_DIR}/include    # To be able to reach "curl/curlbuild.h"
+  ${CURL_BINARY_DIR}/include    # To be able to reach "curl/curl.h"
   # This is needed as tool_hugehelp.c is generated in the binary dir
   ${CURL_SOURCE_DIR}/src        # To be able to reach "tool_hugehelp.h"
   )

src/Makefile.am

@@ -29,17 +29,13 @@ AUTOMAKE_OPTIONS = foreign nostdinc
 # being currently built and tested are searched before the library which
 # might possibly already be installed in the system.
 #
-# $(top_builddir)/include/curl for generated curlbuild.h included from curl.h
-# $(top_builddir)/include for generated curlbuild.h inc. from lib/curl_setup.h
 # $(top_srcdir)/include is for libcurl's external include files
 # $(top_builddir)/lib is for libcurl's generated lib/curl_config.h file
 # $(top_builddir)/src is for curl's generated src/curl_config.h file
 # $(top_srcdir)/lib for libcurl's lib/curl_setup.h and other "borrowed" files
 # $(top_srcdir)/src is for curl's src/tool_setup.h and "curl-private" files
 
-AM_CPPFLAGS = -I$(top_builddir)/include/curl \
-              -I$(top_builddir)/include      \
-              -I$(top_srcdir)/include        \
+AM_CPPFLAGS = -I$(top_srcdir)/include        \
               -I$(top_builddir)/lib          \
               -I$(top_builddir)/src          \
               -I$(top_srcdir)/lib            \